Ordinary Diff -> One variable
Partial Diff -> More than one variable
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The partial derivative only acts on one the variables on the equations and treats the others as constant.
Certainly. It uses the same symbol as the full integral, but you still treat the other independent variables as constants.
GREEN'S THEOREM: if m=m(x,y) and n= n(x,y) are the continuous functions and also partial differential in a region 'r' of x,y plane bounded by a simple closed curve c. DIVERGENCE THEOREM: if f is a vector point function having continuous first order partial derivatives in the region v bounded by a closed curve s